8000 sharpening stone, GlassStone SHAPTON 50203HR
Code: SHA-50203HRProduct detailed description
Very fine edge polishing
Japanese SHAPTON GlassStone JIS #8000 sharpening stone
A premium finishing stone for extremely fine smoothing and polishing of an already sharpened edge on quality kitchen and Japanese knives.
SHAPTON GlassStone JIS #8000 is a very fine Japanese sharpening stone designed for the final stage of sharpening. It removes minor marks left by previous stones, smooths the bevel and helps create a finely finished edge for clean and precise cuts.
The JIS #8000 grit with an abrasive-particle size of 1.84 μm is particularly suitable for quality knives with thin blades and harder steel. The stone follows a #4000 or #6000 grit and should only be used once the edge has been correctly formed, sharpened and freed from any significant burr.
The abrasive layer is mounted on a tempered-glass base, which limits flexing, supports the flatness of the working surface and makes precise blade guidance easier. Thanks to its low water absorption, prolonged soaking is unnecessary – simply wet it with clean water before use.
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Main advantages of SHAPTON GlassStone #8000
Very fine finishing stone
JIS #8000 grit is used for final smoothing and polishing of the edge after previous sharpening on lower grits.
Clean and precise cuts
A finely finished edge passes through ingredients with less resistance and allows precise slicing of fish, meat, vegetables and herbs.
For hard and quality steels
The consistent ceramic abrasive is also suitable for hard, stainless and highly alloyed steels used in Japanese knives.
Solid glass base
The tempered-glass base reinforces the abrasive layer, limits its deformation and supports precise work on the bevel.
Quick preparation
The stone does not require prolonged soaking. Simply wet its surface with water and you can begin working.
What is JIS #8000 grit used for?
- final finishing of an already sharpened edge,
- smoothing marks left by a #4000 or #6000 stone,
- very fine polishing of the bevel,
- removing the remaining fine burr,
- preparing a smooth edge with clean cutting performance,
- quality Japanese kitchen knives,
- knives made from harder steel with fine blade geometry.
Where does the #8000 stone fit?
| Grit | Main use | Result |
|---|---|---|
| #120–#500 | Repairs and coarse sharpening | Restoration of a damaged or very dull edge |
| #1000–#2000 | Basic sharpening | New working edge |
| #4000 | Fine sharpening | Smoother bevel and cleaner cut |
| #6000 | Fine finishing and polishing | Very smooth working edge |
| #8000 | Very fine finishing | Smoothed bevel and precise cutting |
| #16000 | Specialised polishing | Extremely high degree of polish |
The #8000 stone does not sharpen a knife from the beginning
This is a very fine finishing stone. Before it is used, the edge must already be correctly formed and sharpened on a lower grit. The #8000 stone is not suitable for repairing chips or restoring a very dull knife.
Recommended sharpening progression
| Knife condition | Recommended progression | Role of the #8000 stone |
|---|---|---|
| Very dull or slightly damaged knife | #500 → #1000 or #2000 → #4000 or #6000 → #8000 | Final polishing |
| Normally dulled quality knife | #1000 or #2000 → #6000 → #8000 | Very fine finish |
| Sharp and regularly maintained knife | #4000 or #6000 → #8000 | Smoothing the bevel and removing fine marks |
How to use the sharpening stone
- Inspect the edge. The bevel must already be correctly formed and sharpened on a lower grit.
- Wet the working surface with water. Prolonged soaking is unnecessary.
- Secure the stone in a stable holder. It must not move during use.
- Maintain the original edge angle. Precise blade guidance is essential on a fine stone.
- Use only light pressure. The #8000 stone is not intended for significant material removal.
- Alternate both sides. Make the final strokes individually and with minimal pressure.
- After sharpening, rinse the stone and allow it to air-dry.
Precision is essential on a fine stone
If you change the angle or use excessive pressure, the resulting edge may lose some of its cutting performance. Guide the final strokes very lightly, evenly and always at the same angle.
Who is SHAPTON GlassStone #8000 suitable for?
We recommend the stone primarily to experienced users, professional chefs and enthusiasts who already own a basic sharpening set and want to achieve a higher degree of edge refinement.
- quality Japanese and European kitchen knives,
- hard stainless, carbon and highly alloyed steels,
- thin and finely ground blades,
- knives for precise slicing of meat and fish,
- experienced home sharpeners and professionals,
- as a finishing stone after #4000 or #6000 grit.
Who is it not suitable for?
It is not suitable as the first or only sharpening stone for a beginner. It will not efficiently restore a very dull, serrated or chipped edge. A lower grit must be used for these tasks.
Technical specifications
| Manufacturer | SHAPTON |
|---|---|
| Product line | GlassStone |
| Grit | JIS #8000 |
| Abrasive-particle size | 1.84 μm |
| Stone dimensions with base | 210 × 70 × 10 mm |
| Abrasive-layer thickness | 5 mm |
| Base | Tempered glass |
| Weight | 0.1 kg |
| Product code | SHA-50203HR |
| EAN | 4944509502039 |
| Country of manufacture | Japan |
Sharpening-stone care
- Use clean water; sharpening oil is not recommended.
- Rinse the stone after use and remove any remaining sharpening slurry.
- Allow it to air-dry at room temperature.
- Do not dry it on a radiator or in direct sunlight.
- Check the flatness of the working surface regularly.
- Protect the dry stone from impacts, drops and frost.
- Do not store it wet in a closed container.
Important warning
The stone is not intended for ceramic knives. Use a stable non-slip holder when sharpening, maintain a constant angle and do not apply excessive pressure to the fine abrasive layer.
Build a progressive sharpening set
Previous step: SHAPTON GlassStone #6000
The #6000 stone finely finishes the edge and prepares the bevel for subsequent polishing with #8000 grit.
View SHAPTON GlassStone #6000 ›Complete SHAPTON GlassStone range
Choose additional grits for edge repair, basic sharpening, fine sharpening and specialised polishing.
View SHAPTON GlassStone stones ›Sharpening accessories
A stable holder, non-slip mat and tools for cleaning and flattening stones make precise and safe work easier.
Choose accessories ›Learn how to finish an edge correctly
During the sharpening course, you will learn to form a bevel, remove the burr, use individual grits in sequence and work correctly with fine finishing stones.
View the knife-sharpening course ›Frequently asked questions
What is a JIS #8000 sharpening stone used for?
It is used for extremely fine finishing, smoothing and polishing of an edge that has already been correctly sharpened.
Can the #8000 stone be used on a dull knife?
No. A dull knife must first be sharpened on a coarser or medium grit. The #8000 stone is used only for final finishing.
Which stone should be used before #8000 grit?
Ideally, follow a #4000 or #6000 stone. The exact progression depends on the condition of the edge and the desired result.
Is #8000 grit suitable for an ordinary kitchen knife?
Yes, although it provides the greatest benefit for quality knives with harder steel, thin blades and fine edge geometry.
Does SHAPTON GlassStone require prolonged soaking?
No. Thanks to its low water absorption, simply wet the working surface with clean water before use.
Is the stone suitable for hard Japanese steels?
Yes. The consistent ceramic abrasive is also suitable for hard, stainless and highly alloyed steels.
How much pressure should be used when polishing on the #8000 stone?
Use very light pressure. Reduce the pressure to a minimum during the final strokes and maintain a constant edge angle.
Will the #8000 stone create a mirror-polished bevel?
It will significantly refine and polish the bevel, but the final appearance also depends on the steel, previous grits, stone flatness and sharpening technique.
Can ceramic knives be sharpened on the stone?
No. Ceramic knives require specialised diamond abrasive and an appropriate sharpening procedure.
How should the stone be cleaned after use?
Rinse it with clean water, remove any remaining sharpening slurry and allow it to air-dry at room temperature.
Need advice on choosing a fine stone?
Call us at +420 702 049 048, Monday–Friday from 7:30 to 16:00. We will recommend a suitable progression according to the knife type, steel and desired finish.
Additional parameters
| Category: | Shapton Glass – Stones on Glass Base |
|---|---|
| Warranty: | 2 years |
| Weight: | 0.1 kg |
| EAN: | 4944509502039 |
| production: | Japan |
SHAPTON – Japanese specialist in sharpening stones
SHAPTON Co., Ltd. is a Japanese manufacturer of synthetic sharpening stones and accessories for precise edge maintenance. The brand is known for fast abrasive action, a stable structure and a wide choice of grits for kitchen knives and craft tools.
SHAPTON is based in the town of Mashiko in Japan’s Tochigi Prefecture. The company focuses on developing sharpening stones that allow fast, controlled and highly repeatable edge work. Its products are used by professional sharpeners, chefs, craftspeople and home users who want to maintain their knives by hand.
SHAPTON sharpening stones feature a high concentration of abrasive particles and a carefully designed bonding system. This allows them to remove material efficiently, provide clear feedback during sharpening and wear more slowly than many softer stones. The wide grit range makes it possible to repair a damaged edge, create a new bevel, restore ordinary working sharpness and carry out extremely fine final polishing.
You can find the complete selection in the SHAPTON sharpening stones category.
Why are SHAPTON stones so popular?
Fast abrasive action
The high abrasive content makes it possible to restore the bevel effectively even on harder modern steels. With correct technique, there is therefore no need to apply heavy pressure to the blade.
No long soaking required
SHAPTON stones are designed for quick preparation. Before sharpening, the surface is usually only moistened with water, allowing you to start working without a long wait.
Lower wear
The optimised bonding system helps use the abrasive particles more efficiently. The stones therefore retain their working properties for a relatively long time, although their flatness still needs to be checked regularly.
Wide range of grits
From coarse repair stones to extremely fine polishing stones. Users can create a progressive sharpening sequence according to the condition of the knife, the steel used and the desired result.
Main SHAPTON sharpening-stone ranges
SHAPTON Kuromaku
Kuromaku is the classic range of solid synthetic sharpening stones. Individual grits are colour-coded, making it easier to distinguish between multiple stones while working. Each stone comes with a practical plastic case that can also be used as a base during sharpening.
SHAPTON GlassStone
The GlassStone range uses a thin abrasive layer firmly bonded to a glass base. The glass support provides dimensional stability and makes even a thin abrasive layer easier to handle. The extensive grit selection allows users to build a progression from basic sharpening to an exceptionally fine finish.
SHAPTON RockStar
RockStar is a modern premium range combining strong abrasive performance, a uniform structure and a finely controlled result. It is also designed for hard blades and users who want fast work without long soaking.
Which SHAPTON grit should you choose?
The brand or product range itself does not influence the result as much as choosing the correct grit. A coarse stone removes steel quickly, while a fine stone smooths the marks left by previous sharpening and refines the finished edge.
| Grit | Suitable use | Who it is suitable for |
|---|---|---|
| #120–#500 | Repairing a damaged edge, changing the bevel and working on a very dull knife. | More experienced users and repair sharpening. |
| #1000 | Restoring ordinary working sharpness and creating a new cutting edge. | The best first stone for most kitchen knives. |
| #1500–#3000 | Smoothing the bevel and providing a finer finish after basic sharpening. | Home cooks and more demanding users. |
| #4000–#8000 | Fine finishing and polishing of high-quality kitchen knives. | Japanese knives and blades requiring a smooth finish. |
| #12000–#16000 | Extremely fine specialised polishing after the previous stages. | Experienced sharpeners and specific edge-surface requirements. |
A simple recommendation for beginners
When buying your first sharpening stone, begin with #1000 grit. Add a #3000 stone for a finer finish. A coarse stone around #320 or #500 makes sense when the edge is damaged or significantly dull.
Maintaining SHAPTON sharpening stones
During sharpening, the working surface of every water stone gradually wears and may become hollow in the centre. An uneven stone makes it harder to control the angle and can result in an irregular bevel. It is therefore important to clean the surface continuously and flatten it when necessary.
- Moisten the stone before use according to the instructions for the specific range.
- Keep sufficient water on the surface while sharpening.
- Remove sharpening slurry and metal particles after use.
- Check the flatness of the working surface regularly.
- Allow the stone to dry naturally away from direct heat.
- Store the dry stone so that it cannot fall or suffer mechanical damage.
Holders, lapping tools, cleaning discs and other equipment can be found in the sharpening accessories category.
Would you like to learn how to sharpen correctly?
A high-quality sharpening stone is only part of the solution. Maintaining a stable angle, creating a burr, applying pressure correctly and progressing through the individual grits are equally important.
View the knife-sharpening course ›Frequently asked questions about SHAPTON
Where does the SHAPTON brand come from?
SHAPTON is a Japanese company based in the town of Mashiko in Tochigi Prefecture, Japan.
What makes SHAPTON sharpening stones special?
They stand out for their fast abrasive action, high abrasive content, good dimensional stability and wide choice of grits.
Do SHAPTON stones require long soaking?
Usually not. SHAPTON stones are designed for quick use after the surface has been moistened with water. Always follow the instructions for the specific product.
Which SHAPTON stone should I choose first?
For ordinary kitchen knives, #1000 is the most universal grit. It restores the working edge without removing material as aggressively as repair stones.
What is the difference between Kuromaku, GlassStone and RockStar?
Kuromaku stones are classic solid, colour-coded stones in a case. GlassStone uses an abrasive layer on a glass base. RockStar is a modern premium range with fast and even abrasive action.
Are SHAPTON stones suitable for hard Japanese steels?
Yes. A correctly selected SHAPTON stone can also be used on many hard Japanese steels. The appropriate grit, a stable angle and moderate pressure are decisive.
Can tools also be sharpened on SHAPTON stones?
Yes. Depending on the chosen range and grit, they can also be used to sharpen chisels, plane irons and other cutting tools.
Why does a sharpening stone need to be flattened?
The stone may wear unevenly during use. A flat surface improves angle control, blade contact and the consistency of the finished bevel.
Need help choosing?
We will help you select a suitable SHAPTON range and progressive grits according to the knife type, condition of the edge and your experience. Contact Dellinger on +420 702 049 048 on working days between 7:30–16:00.
| EU representative of the manufacturer : | Dellinger s.r.o. |
|---|---|
| Address of the EU representative : | Rižská 1580/7 102 00 Praha |
| Email of the EU representative : | saleseu@dellinger.cz |